乙酰丙酮分光光度法测定水中甲醛的标准对比分析

Comparative Analysis of Standards for Determination of Formaldehyde in Water by Acetylacetonate Spectrophotometry Method

文中对GB 18584-2001、GB/T 17657-2013、HJ 601-2011标准中利用乙酰丙酮分光光度法测定水中甲醛含量的具体条件进行比较,从显色过程、标准曲线、准确度、灵敏度、检出限、显色稳定性六个方面进行比对分析。结果表明,三个标准中GB 18584-2001的测定范围最广,HJ 601-2011的灵敏度最高、方法检出限最低,GB 18584-2001、GB/T 17657-20134.59、HJ 601-2011的显色过程、线性关系、准确度、显色稳定性均没有显著性差异。

In this paper,the specific conditions for the determination of formaldehyde in water by acetylacetone spectrophotometry in GB 18584-2001,GB/T 17657-2013 and HJ 17657-2011 are compared and analyzed from six aspects:color process,standard curve,accuracy,sensitivity,detection limit and color stability.The results show that among the three standards,GB 18584-2001 has the widest determination range,HJ 601-2011 has the highest sensitivity and the lowest detection limit,and there is no significant difference in color process,linear relationship,accuracy and color stability of GB 18584-2001,GB/T 17657-2013 and HJ 601-2011.